Tds3000 signal check

I am running LabVIEW 8.2.1 and using a Tektronix TDS3034B to read some signals. I have the O-scope connected via GPIB-USB cable and I occasionally lose all communication with the scope. Is there any way to ping the scope to be sure I have connection with it before beginning my test? A lot depends on receiving a signal from the scope! Any help would be great!
Thanks!

*IDN? can easily be used programatically. You just send it to the instrument using VISA, GPIB, serial or whatever; and then read the return string. [see example LABVIEW - GPIB.vi]
As mentioned Find VISA Resource will work too (it uses *IDN? internally). Or, the GPIB status VIs will also verify communication. The Instrument Drivers you're using for your TDS 3000 series scope should have a simple VI that works as well but I don't use that model so I'm not sure. The 5000 and 7000 series drivers have revision check VIs that will return the firmware version, and the initialize VI can be set to return the ID string. All these techniques will verify your connection.
BTW, I've also had trouble with Textronix USB comm but NOT when using a USB-GPIB interface, only plain USB.
Using LabVIEW: 7.1.1, 8.5.1 & 2013

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Hi! I purchased my ATV in Miami, but I live in Argentina. I have not been able to get the device running on any TVs. When I plug it in, it briefly shows the apple logo, then a sign saying no signal, check power cords and power source or sthg like that.

Hi!
I purchased my AppleTV in Miami, but I live in Argentina.
I have not been able to get my device running correctly, and altough I've read tons of things online, I still have no solution to my problem.
Here's the thing: after everything's plugged in and ON, I see the Apple logo briefly, then the TV displays a sign that says no signal, check pwoer cords and power source.
But everything is plugged in and connected properly, otherwise, I doubt I'd be seeing the apple logo, right?
I tried changing the HDMI cable, reversing the ends, switching ports, hard resetting the ATV, and trying a different TV. No luck.
I read there is some issue with Samsung TVs, and most LED and LCD tvs down here are Samsung.
On the other hand, I cannot return it or exchange it, since I bought it in the states.
Oh! One of the tvs I tried it on displays a little sign that reads "connected at 1280x720 @60hz", and only THEN, goes to the "no signal" sign.
Please!!! I am being driven up the walls here.... HELP!!

Try this:
Change the Apple TV resolution:
Press and hold the Menu and Up button on your Apple Remote for six seconds.
The Apple TV will automatically cycle to the next resolution at approximately 20 second intervals.
Press Play on the Apple Remote to keep the current resolution or Select to manually cycle to the next resolution.

Apple TV worked until today. Message says unsupported signal check your output device. I have checked hdmi cable with another device and it's fine. Put on a different tv and same message. Went out yesterday and bought a new Apple TV and same problem.

Apple TV worked until today. Message says unsupported signal check your output device. I have checked hdmi cable with another device and it's fine. Put on a different tv and same message. Went out yesterday and bought a new Apple TV and same problem.

Which TV do you have.
You may wish to try the following:
Press and hold the menu and the up button simultaneously on the remote for six seconds, the Apple TV should then begin to cycle through the various resolutions available to it at 20 second intervals.. If you see a picture appear up on your screen, use the remote to scroll down to the OK option and select it.

HDMI unsupported signal check device output

Hi,
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I have seen several people having similar problems before. Is this not resolvable?

Hi
I've got exactly the same issue, waited two weeks for the update as this was meant to fix the issue but makes absolutely no difference, I rang support and got a fob off answer "we are aware of the problem and are looking in to it"(I get the feeling as he was somewhere not in the UK! he hasn't even seen a YouView box) I myself work as a technical support engineer and my Boss wouldn't have been impressed to say the least if I ever gave that answer to any of our customers.
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No video signal check video cable p6531p

HP PavillionModel p6531p Product WW599AA Windows 7 64-bit
I receive the following message within seconds of powering on the computer:
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"monitor going to sleep"
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Video is on board, so I tried installing a new video card in my PCI-E x 16 expansion slot. I can't disable the on board due to not having video. I was hopeful that the new one would over ride the on board.
I've tried as many of the trouble shooting ideas available on the HP website. I don't have video, so I can't try them all.
I did try resetting the BIOS using the directions that were included even if you couldn't see anything on the monitor.
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What type of connection? DVI? Are you sure it is a onboard graphics Card? Most monitor failure is the result of power supply you might want to try that.

Nokia Maps need signal check option

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@leo3487
Are you saying that your N97 Mini doesn't have Menu > Applications > Location > GPS data > Position > Options > Satellite Status or that algorithm utilised by Garmin Mobile Xt seems to produce satellite strength reading faster?
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No signal on Apple TV3

Today i turned on my TV. Pressed the apple remote, the apple TV3 is showing the usual white light.
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When i press on buttons on my apple TV remote the light doesnt change.
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You might try a hard reset. It's helped me in the past.
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Run 2 PCI 6024E in parallel -- Dirty signals

Hi everyone,
I have two PCI-6024E Cards in my system. I want to run them parallel in continuous acquisition mode (I need to monitor 12 channels in differential mode).
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When doing so I have false measurements 3 to 4 times a second. Strength about 70% of my input range.
Things I did so far:
Checking the circuitry by using an analog data recorder. Result: clean signal
Checking the channels in MAX (test feature). clean signals
If anyone has any suggestions they would be greatly appreciated
Peter
p.s. I attached a copy of the code
Attachments:
_BehrLogDevZone.llb ‏146 KB

Hello Peter,
first you should insert an error cluster to display the error (inside and outside from the while loop).
Then you should reduce the amount of data for example from 600.000 to 6.000.
You have 12 Channels with 600.000 values per channel and you save double values.
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You should try to open the file before you jump into the while loop.
In the while loop follows the write function and outside from the while loop the close function.

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Having some trouble getting any audio levels into garageband from my PF 302 firewire interface. The computer is an I-Mac running 10.4.10. According to the instructions for the Firefly I don't have to download any drivers or software, is this true?
I went into the Utilities folder then to Audio/Midi and changed the Inputs to the Firefly 302 but it won't let me change the volume input on the individual channels. They are faded out and I can't access them, what gives? Is this why I can't get any audio in from the mic?
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alright, so i'm not an expert, but i'm presuming your using the firefly 302 plus, your using the mic input on the front of the firefly, then what are you using for output? the headphone jack or the 1/4 out on the back? So what you need to do is make sure the green lights are on on the front of the firefly, if the red lights turn on, that means your signal is clipping. so you want to have the highest signal you can while not hitting the red on your firefly. Then you should select the firefly in your preferences/audio midi/audio input, but keep the audio output built in output or whatever speakers you use. The next thing is to make sure the track you want your voice on is a real instrument track and that the little dot on the left of the track is red, and the lock a little to the right of it is NOT green. Then if you don't get a strong signal, check the volume levels on the firefly, and in garage band, and if you still are having problems try pushing the +48 phantom power button on the firefly. If that doesn't work I need to know what your using to connect the firefly to your mac.
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Sony Bravia KDL40XBR2 + Apple tv "unsupported audio signal"

i hope someone has some answers for me.
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- i really dont want to buy a new tv for this reason.
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OMG. That worked! Thank you so much WC! Im giddy with excitement.

Apple Airport Extreme No Wireless Signal

Other than downgrading firmware, re-installing software or reinstalling an older OS (Windows style thinking), does anyone have a solution to this problem
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One day the Extreme stopped. Naturally, the WDS died. I played with the Extreme for a 1/2 day, but couldn't it too work. I made the Express into my sole Wifi base. Workable but not ideal, I now have dead zones in my house.
I finally found time to spend (waste) another day trying to get the Extreme working again. No luck. Some observations:
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This wave of posts reminds me of time when iBooks had a faulty motherboards. This looks like an easier fix, a firmware or software patch.
If anyone has a real solution, as opposed to an experimental one, I would appreciate it. Other posts recommend switching to more reliable third party hardware, I guess it might come to that.
Thanks.
iBook, Mini Mac, iMac Mac OS X (10.3.9)

Sounds like possible interference from a new neighbor's wireless network. Have you tried other wireless channels to see if you can find some clearer airspace?
AirPort Utility > Manual Setup > Wireless Tab (below the icons)
Hold down the option key on your Mac as you click on the Channel selection box to see more choices.
You might also want to download a utility like Air Radar to display all of the visible networks in your area. Click on Scan at the lower right of the main window. Look for the channels that other networks are using and set your router to a channel that is as far away as possible.

Triggering signal

Hello,
i am doing some acceleration measurement on a gear box. On the shaft there is installed a rotary encoder with 2048 lines. At the casing there is an acceleration sensor. I want to accquire one acceleration sample each time a falling edge of the rotary encoder occurs.
So the sampling rate will be dependent on the number of revolutions of the gear box.
How can i handle this problem?
Hardware: PXI-6123
Thank you for help!
Jens

Okay,
i think it should work this way! But there is an error message!
Ther german text says:
"Fehler -200019 ist bei DAQmx Read (Analog 2D DBL NChan NSamp).vi:3 aufgetreten
Eine ADC-Konvertierung wurde vor Abschluss der vorherigen Konvertierung gestartet.
Verlängern Sie die Periode zwischen ADC-Konvertierungen. Wenn Sie einen externen Takt verwenden, überprüfen Sie, ob das Signal Rauschen oder Spannungsspitzen enthält."
Here the translation:
"Error - 200019 ...
An ADC-conversion is started before the end of another.
Make the period between ADC-conversions longer. If you use a extern timing signal check if the signal has noise or peaks."
I checked the signal with an oszilloscope. There is some nois and peaks. But how much noise is okay??? Has anyone experience with noisy signals???
regards
Jens
Attachments:
triggering.vi ‏20 KB

Poor signal/service

Is there some way to improve the signal check the signal for this phone as my brother in law was where I live with a iphone4 in the summer and he had no service issues when he was here.We renewed our contract with a i phone4 and can't even call each other in our own house! I had no problems with our old cells and use a internet stick for high speed at home as we have no other way to get high speed internet where we live as we have a booster antenna as well.

Hello mojo622,
I am so sorry to hear that you've having problems with the service in your area. We definitely want to make sure that we address any service issues you may be experiencing. Can you please provide the zip code where you're experiencing these problems? Also, what is the make and model of your phone? You can update your roaming, and possibly improve service on a 4G phone by powering the phone off, and removing, then reinserting the SIM card.
On a 3G or a basic phone, you can update by dialing *228, option 2. Please give this a try, and let us know if things improve.
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Follow us on Twitter @VZWSupport

No picture when connecting Mac Mini GMA 950 to Panasonic TX-PF42G10 via HDM

Hi !
I have a Mac Mini Core Duo 1,66 GHz with GMA950 chipset (MacMini1,1 sold from february 2006 to september 2006) which I was using as a Plex mediacenter connected to an old CRT display via an s-video adapter.
I purchased a brand new Panasonic TX-PF42G10 plasma screen the other day, and for the life of me I can't get my Mini to feed anything to the HDMI inputs via a DVI/HDMI cable.
When I remotely connect to my Mini with ARD or VNC, I can see it successfully detects I have a "Panasonic-TV" and lets me choose 1920x1080 either in 24Hz, 50Hz or 60Hz. I tried all three : no picture.
Tried connecting this Mini via the VGA input: works fine.
I tried to install SwitchResX but I don't really know what to do with it. Tried to install Snow Leopard too, but it didn't help either.
YET I FOUND SOMETHING RATHER INTERESTING.
I have another more recent Mini (one of the new 2009 models), hooked up to a Samsung T240HD display via DVI. Since this display also has an HDMI input, I tried to connect the other, older Mini to it. And then... the Samsung display wouldn't let me pick the HDMI input from the source menu!
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Thanks for taking the time to read, and thanks in advance to anyone who can help.

Sounds quite possibly like the Panasonic enforces HDCP over its HDMI inputs and the older GMA950 equipped mini is unable to oblige.
That's what I thought too, as the newer Mini works just fine with my two screens, using the very same cable I used with the older Mini. Bugger...
FYI, I tried 720p : no picture either.
Does the Panasonic's user guide make reference to making computer connections over HDMI? It could be that only one of the HDMI inputs on the TV is designated for computer input, e.g. only one of the TV's HDMI inputs can work from a non-HDCP compliant source.
I do think I tried all 3 inputs, and the user manual never suggests that one of them is designated for computer input (I know some Samsung screens work that way, but this Panasonic doesn't seem to). Anyway, I'll give it a try once more, but I have little hope...
Meanwhile, I connected my Mini via VGA, 1366x768 resolution. Not too bad when viewed from the sofa, but it kills me not to be able to use the digital input...
Thanks for your replies, though

I want to move a channel

I have returned from holiday to find that my BT Vision + box channels have all been altered by BT. My previous signals were from the Winter Hill transmitter, north west, but then altered to BBC Wales,(1) ITV Wales (3) and SC4 (Welsh language) (4) I have spent a lot of time doing rescans, particularly using the trick of letting the scan proceed, in part, with the aerial out, and more by luck than judgement, I have BBC NW (1) and ITV NW (3) back. So I now have the stations back to normal with the exception of Channel Four. I found it on number 896 and made it a Favourite, and it can be accessed by going to Favouites after pressing the BTVision button. SC4 occupies the position of Channel Four in my channel listings. I want to delete SC4 altogther and replace it with Channel Four, so I have channels 1,2,3,4,5,etc etc. Is this possible? I am apprehensive of doing yet another channel scan in case the others revert to the Wales transmitter. It looks to me as if SC4 can be 'hidden' but not removed. What is the point of that?

Hi TimothyWF,
Welcome and thanks for posting. Take a look at Missing Freeview channels on BT TV. try clicking on Channel & signal check. Let us know if that helps.
Cheers
David
BTCare Community Mod
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Tds3000 signal check

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